Abstract
Cobalt Rare-Earth (CoR , R = Pr,Sm) thin films on a Cr underlayer have shown promise as future ultra high density magnetic recording media. The activation volume or the magnetic switching volume (V*) is an important consideration for thermal stability and media noise in high density recording media and V* can also provide information about the magnetization reversal behavior in these films. The magnetic switching volume was estimated for the CoPr films with thicknesses from 28 to 639 nm with a Cr underlayer of 80 nm annealed at 500 °C. The measured switching volume ranges from 1. 3 to 1. 7×10-18 cm3. We have also studied the Cr underlayer thickness and temperature effects on the swithcing volume for the CoSm films.
Original language | English (US) |
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Pages (from-to) | 4019-4021 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 32 |
Issue number | 5 PART 1 |
DOIs | |
State | Published - 1996 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering